Sprayer



Patented Aug. 30, 1927.

ROBERT J'. ,COAFFEYQ 0F OAKLAD, CALIFORNIA. Y

SPIRAYER.

Application illed April 19,1926. Serial No. 103,055.

This invention relates to, improvements in sprayersflor use in connection with the s raying of varnishes, lacquers, enamels and the like upon surfaces to be treated, such 'as' the bodies and other parts ofpmotor vehicles.

The general object of' the invention is to provide a construction in sprayers adapted or use with' various types of liquid varl nishes,'lacquers, enamels .and the like, the fluid characteristics of which may differ `one from the other.

The above and other objects are accomplished by instrumentalities pointed out 1n) the followingspecication.

The invention is clearly defined in the claims.

A satisfactory embodiment of the invention is illustrated in the accompanying drawings forming Apart of the specification and in which f i Figure 1 is a contracted vertical cross section taken through thetank of this inventionN and showing the spraying apparatus partly in section and partly in side elevation and arranged for use. Figure 2 is adetaillongitudinal section of theaifr nozzle, and

Figure 3 is 'a 4contracted longitudinal section of` the fluidnozzle.

` lThe is of metaland of ordinary construction and of'a size that may be con- 85 vwhich is screw threaded so as to accommo- 'veniently held and supported b one hand of the operator. The upper en portion of the can is contracted-to provide a neck 6 i date va screwl lthreaded cap or closure 7 of l, ordinary construction. The lacquer, varnishv or enamel 8 to' be sprayed is poured into tank from 'its original package or other centaine. The iiui outlet tube 9 extends intot 8 through' a fiber gasket 9 dis- `in an opening in the top portion 10 ofthe tank, theftube beingiof a size to l snugl fitwithin the gasket so that the tube may adjusted 'vertically with respect to the position of the parts shown in Figure 1,

and be' frictionally held 'against accidental displacement in any of its adjusted positions.

11 is an outlet nozzle for fluid tube 9, and,

is arr ed in theouter end portion of the tube an constructed so that the sizeof the passage therethrough may bel varied. In the present instance I have shown the nozzle as being made up of two telescopic tubular sections indicated respectively by 12 and13, the larger section 12 being tightly fitted in the, outer end portion of tube 9 and formed of metal. The smaller section 13 is also formed of metal, and telescopes into section and the size of the nozzle is such with respect to the cross sectional interior of tube 14 that when the nozzle is inserted into the tube as shown, the tube will be tensioned transversely, thereby operating -to hold the nozzle against accidental displacement.- 16 is an open-ended casing disposed transversely of the cap or closure 7 jand lixedly secured thereto. This casing is preferably tapered longitudinally and is adapted to permitthe nozzle to be inserted as shown and tofrictionally bind on the nozzle 15,

and thereby hold the same against accidental displacement. The nozzle is by preference formed of'three telescopng sections respectively indicated by 17, 18 and 19.

These ysections are frictionally held together the outer section being adjustable longitudinally of the intermediate section 18, and the latter being adjustable longitudinally of the section 17.

In the use of the device and when the parts are positioned as shown in Figure 1, va current of air directed transversely across the tube of section 13 by section 19 causes. partial vacuum Within tube 9, whereupon the air pressure within tank 5 causes the fluid to move upwardly through tube 9 and n -nozzle- 1l and the air operates to divide the fluid into a finely divided spray and to direct the same outwardly and away from nozzle 11,." In this connection,it-will be observed that an air vent is formed in the a relatively coarse `or dense s ray mayv had when the section 19 is re atively close.

to the end of section 13, and the coarseness of the spray diminishes as the section 1 9 is adjusted farther away from the end of section 13. In connection with the fluid outlet tube 9, andA fluid nozzle 1l, it is to be noted that these structures lend themselves readily in spraying relatively thick and ,relatively thin fluids. In instances where the fluid to be sprayed is relatively thin, the artsI are arranged as shown in i re 1. n a case Where relatively thick fluid is used, section 13 is removed and Huid tube 9 is adjusted so as to aline the end of section 12 with section 19. The passage through section l2, be ing of greater cross-sectional area than the passage through the section 13, allows the relatively thick fluid to move readily upward therethrouo'h.

Although I have shown and described one embodiment of my invention, it is to be understood that the same is susceptible of various changes; and I reserve the right to employ such as may come Within the scope oit the appended claims.

I claim:

l. A s rayer comprising a liquid holdiner tank, a uid outlet tube havinor an inlet en portion extending into the tanr and adjustably mounted in said tank, a nozzle connected to the outlet end portion of the said tube, said nozzle comprising telescoping sections detachably connected together, and an air nozzle connected to the tank and disposed in angular relation to the Huid nozzle.

2. A sprayer comprising a liquid holding tank, a fluid outlet tube having an inlet end portion extending into the tank and adjustably mounted in said tank, a nozzle connected to the outlet end portion of the said tube, said nozzle comprising telescoping sectionsdetachably connected together, and an air nozzle detachably connected to the top of the tank and including a plurality of telescoping sections detachably connected with each other and disposed in angular relation to the fluid nozzle.

ROBERT J. COFFEY. 

